00523naa#a2200181#i#450# EN\\bibl\80705 20241204112342.3 2076-0655 20151225b2015####ek#y0engy0150####ca RUS RU Hardening of cement stone with microfine additives Journal article Moscow Individual Entrepreneur Svetlana Vasilievna Samchenko 2015 2 с. Journal article local Krivoborodov Yu R Elenina A A tsilicates.ru